How to slove the floating dirty when printing with sublimati

How to slove the floating dirty when printing with sublimation offset ink?

Approach:
(1) change with a high viscosity, and thick hard emulsion ink, or high viscosity in the original ink Mexican oil.
(2) change the paper sublimation offset ink,offset sublimation ink, sublimation offset printing ink
(3) adjust the dampening fluid components and PH.